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Free Birth Chart Calculator

Enter your birth date and place to get your free birth chart: a full natal chart with every planet and its degree, the 12 houses, the aspects between them, and readings written from your own astrology chart, not just your Sun sign.

Free. No email, no account. Your full chart in seconds.

When were you born?

Free · no email · birth time optional — without it we leave out your Rising sign and houses, and tell you if your Moon changed sign that day.

What your free birth chart includes

The result on this page is the full chart, not a preview: a birth chart with houses, with degrees and with your Rising sign. The first readings are free too.

  • · The wheel. Your natal chart as a wheel: the 12 signs, every planet at its degree, the house cusps and the major aspect lines.
  • · Every planet, with degrees. Sun through Pluto, the North Node and Chiron, each with its sign, its degree and minute (for example 24°11′), its house and a retrograde mark.
  • · 12 houses. All twelve house cusps with the sign and degree on each — the part many free tools tuck behind a click.
  • · Aspects with orbs. Every aspect between your planets, sorted from the tightest (most exact) outward. The major aspects show first; the rest are one tap away.
  • · Free readings. Full readings for your Sun, Moon and Rising, written from your chart, plus the titles of every other reading. A free account opens the rest.
  • · A plain-text copy. One button copies your whole chart as text, so you can paste it into a note or an AI chat.

Only want your Sun, Moon and Rising? The Big 3 calculator gives you those three (plus Mercury, Venus and Mars) in a smaller result.

How this birth chart calculator works

A birth chart calculator (a natal chart calculator is the same thing) needs three things from you: a birth date, a birth place and — if you know it — a birth time. The place is turned into coordinates as you type. We then compute the planet positions with the Swiss Ephemeris, the same ephemeris professional chart software uses, to the arc-minute.

The chart uses the tropical zodiac (the one Western astrology and every horoscope column uses) and Placidus houses. The time zone and daylight-saving offset are resolved from your birth place and date using the standard IANA time-zone database, so you only need the local clock time on your birth certificate. Nothing is tied to you or kept in a profile unless you make a free account and choose to save the chart.

Don't know your birth time?

Leave the time field blank. The calculator still shows the sign and degree of every planet, the North Node and Chiron, and all the aspects between them, computed for noon on your birth date. For most planets the answer is the same at any hour of that day.

Three things need a time: your Rising sign, your Midheaven and your 12 houses. All three move through the whole zodiac every 24 hours, so a guessed time gives a made-up answer. This calculator leaves them out instead. The Moon is the in-between case: it moves about half a degree an hour, so on about two days in five it changes sign. When that happens on your birthday, the result tells you the time of the change and names both signs.

Where to find your birth time: the long-form birth certificate (in the US, request the "vault" copy from the state), hospital records, a baby book, or a parent who remembers. If you find it later, come back and recalculate — a free account can add it to a saved chart.

Free chart vs Complete Report

What the free chart, a free account and the Complete Report each include
Included Free chart (this page) Free account Complete Report ($19)
Wheel, planets, degrees, houses, aspectsYesYesYes
Readings for Sun, Moon, RisingYesYesYes
Readings for every other planet, house and aspectTitles only (plus your tightest aspect)YesYes
Saved charts, today's transits on your chart—Yes—
Life themes, strengths and challenges, life purpose, aspect patterns——Yes
Designed 40+ page PDF you keep——Yes
Charts you can run2 per device every 24 hoursUnlimitedOne chart per report

The honest summary: the data is free for everyone, the readings are free with an account, and the report is for people who want the whole chart interpreted as one story in a PDF. You can buy the report without an account.

Most accurate birth chart calculator? What to check

Every serious calculator uses an ephemeris of the same JPL-grade accuracy, so "most accurate" is less about the maths and more about what a tool does with your inputs. Five things to check on any site, including this one:

  1. 1. Ephemeris source. Swiss Ephemeris or NASA JPL. If a site does not say, ask why. This one uses Swiss Ephemeris positions.
  2. 2. Historical time zones. The tool must know what the clocks did in your city in your birth year, not just today. A wrong hour moves the Ascendant by about 15 degrees.
  3. 3. The house system, named. If the site does not name it, you cannot compare houses across tools. This one says Placidus on the result.
  4. 4. Degrees to the minute. A tool that shows only whole degrees hides how close a planet sits to a sign boundary — 29°02′ and 29°58′ both print as 29°, and only one of them is a real cusp case.
  5. 5. No rounding of the Moon. The Moon covers half a degree an hour. A tool that silently assumes noon and never tells you is hiding the one placement that might be wrong. This one tells you.

The map behind the calculator

A birth chart (also called a natal chart) is a map of the sky at the minute you were born, drawn from the place you were born. It shows where the Sun, Moon and planets sat against the 12 signs of the zodiac, and — with a birth time — which of the 12 houses each one fell in and where the horizon cut the sky (your Rising sign).

Reading it means combining three layers: planet (what), sign (how) and house (where), and then the aspects that link planets together. If this is your first chart, start with our birth chart guide for beginners, then the step-by-step walkthrough of a chart.

FAQ

Do I need to give my email to get my birth chart here?

No. There is no email step and no account step. Enter your birth date, your birth place and, if you know it, your birth time. The full chart then shows on this page: the wheel, every planet with its degree, the 12 house cusps, the aspects and your first readings. An email address is only needed if you decide to make a free account to save the chart and read the rest of the readings.

What can the calculator show without a birth time?

Without a birth time it still shows the sign and degree of every planet, the North Node and Chiron, plus every aspect between them, computed for noon on your birth date. It cannot show your Rising sign, your Midheaven or your 12 houses, because those depend on the exact minute and place. If the Moon changed sign on your birthday, the result says so and names both possible Moon signs.

Which house system does this calculator use, and can I change it?

It uses Placidus, the house system most Western astrologers and most chart sites use by default, so your houses match what you see elsewhere. This page shows Placidus only. If a planet sits near a house cusp, a different system (Whole Sign, Koch, Equal) can move it one house over; the sign and degree of the planet do not change.

Why does my result say my Moon may have changed sign?

The Moon moves about 12 to 15 degrees a day, so on about two days in five it crosses from one sign into the next. If you left the birth time blank and your birthday was one of those days, the calculator cannot know which side of the change you were born on. So it shows the Moon for noon, tells you the time the Moon changed sign, and names the sign before and after. Add your birth time and the note goes away.

How accurate is this birth chart calculator?

The planet positions come from the Swiss Ephemeris, the same source professional chart software uses, and each is printed to the arc-minute (for example 24°11′). For the Sun and the outer planets that is far more precision than a reading needs. The sensitive parts are the Moon and the houses: the Moon moves about one arc-minute every two minutes of clock time, and the Ascendant moves about one degree every four minutes on average. So the accuracy of your chart depends far more on an exact birth time than on the maths.

Can I calculate a chart for someone else?

Yes. Enter their birth date, time and place the same way. Each device can run 2 free charts every 24 hours without an account; running the same details twice does not use a second chart. After that, a free account lets you run and save as many charts as you like — your own, a partner's, a friend's — with no card.

What does the Complete Report add that the free chart doesn't?

The free chart gives you all the data plus full readings for your Sun, Moon and Rising, and a free account opens the readings for every other planet, house and aspect. The $19 Complete Report is the layer on top: your life themes, strengths and challenges and life purpose written across the whole chart, your aspect patterns explained, and a chart overview — designed as a 40+ page PDF you keep. You can buy it without an account.

Does the calculator handle historical time zones and daylight-saving time?

Yes. The time zone is resolved from your birth place and birth date, including the daylight-saving rules in force that year. So a summer birth in 1985 and a summer birth in 2005 in the same city each get that year's offset. You enter the local clock time from your birth certificate; the conversion to Universal Time happens on our side. For births before about 1970, or in places with wartime or Soviet-era clock changes, the historical record itself has gaps — check the offset if your chart looks off. If your certificate itself is wrong, no calculator can correct for that.

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